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<title><![CDATA[EC21 Product Catalogs - prevent common cold]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/prevent_common_cold--0766/1/prevent common cold.html]]></link><item>
<title><![CDATA[Blackening Coating]]></title><link><![CDATA[https://richconncnc.en.ec21.com/Blackening_Coating--11822649_11822659.html]]></link><description><![CDATA[common CNC surface finish treatment process. The purpose of blackening is to prevent rust on the metal surface. There are two kinds of metal blackening: alkaline heating blackening and normal tempera]]></description><pubDate><![CDATA[20230721]]></pubDate></item>

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